Thompson Bros. Teaspooned Side-Burn is a blended Scotch whisky from a single cask, bottled at 35 years old and at a natural-strength 51.1% ABV. For a new drinker, that points to a whisky shaped by long maturation, with extra concentration and complexity compared with younger releases.
The label also notes refill wood, which usually means the cask has had a gentler influence than fresh oak. In practice, that often allows mature spirit character to stay in focus rather than being dominated by heavy vanilla or strong oak sweetness.